I have to admit that 2009 has gotten a lot better about undo
- especially in sketches. Then again, better than what we used to
have isn't saying a whole lot. I just wish there was some hard
documentation so we would know what to expect. I never know when it
will and won't work.

Here's a trick if you realy screw up a part. Open the containing folder, right click on it,drag an drop into same folder, click copy here, change the name so its not the same as the orignal then open it. THis works on SW08. I dont think this will work if you close and reopen the orignal before hand.